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Learn a Fact: 1 x 4

1
1
x  0
2
1
x  6
3
2
x  1
4
5
x  1
5
1
x  3
6
0
x  3
7
1
x  1
8
6
x  0
9
0
x  4
10
9
x  0
11
9
x  1
12
5
x  0
13
1
x  4
14
7
x  1
15
8
x  1
16
0
x  8
17
2
x  0
18
7
x  0

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